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Kevin O'Connord9211ee2012-01-31 22:54:49 -05001// Bochs VGA interface to extended "VBE" modes
2//
3// Copyright (C) 2012 Kevin O'Connor <kevin@koconnor.net>
4// Copyright (C) 2011 Julian Pidancet <julian.pidancet@citrix.com>
5// Copyright (C) 2002 Jeroen Janssen
6//
7// This file may be distributed under the terms of the GNU LGPLv3 license.
8
Kevin O'Connore6bc4c12012-01-21 11:26:37 -05009#include "biosvar.h" // GET_GLOBAL
Kevin O'Connor2d2fa312013-09-14 21:55:26 -040010#include "bochsvga.h" // bochsvga_set_mode
11#include "config.h" // CONFIG_*
Kevin O'Connor5d369d82013-09-02 20:48:46 -040012#include "hw/pci.h" // pci_config_readl
13#include "hw/pci_regs.h" // PCI_BASE_ADDRESS_0
Kevin O'Connor2d2fa312013-09-14 21:55:26 -040014#include "output.h" // dprintf
Kevin O'Connor2e57c812013-09-14 22:29:32 -040015#include "std/vbe.h" // VBE_CAPABILITY_8BIT_DAC
Kevin O'Connor2d2fa312013-09-14 21:55:26 -040016#include "stdvga.h" // VGAREG_SEQU_ADDRESS
Kevin O'Connor2d2fa312013-09-14 21:55:26 -040017#include "vgabios.h" // struct vbe_modeinfo
Kevin O'Connor4ade5232013-09-18 21:41:48 -040018#include "x86.h" // outw
Julian Pidancet87879e22011-12-19 05:08:00 +000019
Kevin O'Connor933bb762012-02-01 21:54:55 -050020
21/****************************************************************
22 * Mode tables
23 ****************************************************************/
24
Kevin O'Connorc4a0b972012-01-09 20:21:31 -050025static struct bochsvga_mode
Julian Pidancet87879e22011-12-19 05:08:00 +000026{
27 u16 mode;
Kevin O'Connorc4a0b972012-01-09 20:21:31 -050028 struct vgamode_s info;
Kevin O'Connorf1e217d2011-12-31 03:18:18 -050029} bochsvga_modes[] VAR16 = {
Julian Pidancet87879e22011-12-19 05:08:00 +000030 /* standard modes */
Kevin O'Connor03776022012-01-21 11:00:11 -050031 { 0x100, { MM_PACKED, 640, 400, 8, 8, 16, SEG_GRAPH } },
32 { 0x101, { MM_PACKED, 640, 480, 8, 8, 16, SEG_GRAPH } },
33 { 0x102, { MM_PLANAR, 800, 600, 4, 8, 16, SEG_GRAPH } },
34 { 0x103, { MM_PACKED, 800, 600, 8, 8, 16, SEG_GRAPH } },
35 { 0x104, { MM_PLANAR, 1024, 768, 4, 8, 16, SEG_GRAPH } },
36 { 0x105, { MM_PACKED, 1024, 768, 8, 8, 16, SEG_GRAPH } },
37 { 0x106, { MM_PLANAR, 1280, 1024, 4, 8, 16, SEG_GRAPH } },
38 { 0x107, { MM_PACKED, 1280, 1024, 8, 8, 16, SEG_GRAPH } },
39 { 0x10D, { MM_DIRECT, 320, 200, 15, 8, 16, SEG_GRAPH } },
40 { 0x10E, { MM_DIRECT, 320, 200, 16, 8, 16, SEG_GRAPH } },
41 { 0x10F, { MM_DIRECT, 320, 200, 24, 8, 16, SEG_GRAPH } },
42 { 0x110, { MM_DIRECT, 640, 480, 15, 8, 16, SEG_GRAPH } },
43 { 0x111, { MM_DIRECT, 640, 480, 16, 8, 16, SEG_GRAPH } },
44 { 0x112, { MM_DIRECT, 640, 480, 24, 8, 16, SEG_GRAPH } },
45 { 0x113, { MM_DIRECT, 800, 600, 15, 8, 16, SEG_GRAPH } },
46 { 0x114, { MM_DIRECT, 800, 600, 16, 8, 16, SEG_GRAPH } },
47 { 0x115, { MM_DIRECT, 800, 600, 24, 8, 16, SEG_GRAPH } },
48 { 0x116, { MM_DIRECT, 1024, 768, 15, 8, 16, SEG_GRAPH } },
49 { 0x117, { MM_DIRECT, 1024, 768, 16, 8, 16, SEG_GRAPH } },
50 { 0x118, { MM_DIRECT, 1024, 768, 24, 8, 16, SEG_GRAPH } },
51 { 0x119, { MM_DIRECT, 1280, 1024, 15, 8, 16, SEG_GRAPH } },
52 { 0x11A, { MM_DIRECT, 1280, 1024, 16, 8, 16, SEG_GRAPH } },
53 { 0x11B, { MM_DIRECT, 1280, 1024, 24, 8, 16, SEG_GRAPH } },
54 { 0x11C, { MM_PACKED, 1600, 1200, 8, 8, 16, SEG_GRAPH } },
55 { 0x11D, { MM_DIRECT, 1600, 1200, 15, 8, 16, SEG_GRAPH } },
56 { 0x11E, { MM_DIRECT, 1600, 1200, 16, 8, 16, SEG_GRAPH } },
57 { 0x11F, { MM_DIRECT, 1600, 1200, 24, 8, 16, SEG_GRAPH } },
Julian Pidancet87879e22011-12-19 05:08:00 +000058 /* BOCHS modes */
Kevin O'Connor03776022012-01-21 11:00:11 -050059 { 0x140, { MM_DIRECT, 320, 200, 32, 8, 16, SEG_GRAPH } },
60 { 0x141, { MM_DIRECT, 640, 400, 32, 8, 16, SEG_GRAPH } },
61 { 0x142, { MM_DIRECT, 640, 480, 32, 8, 16, SEG_GRAPH } },
62 { 0x143, { MM_DIRECT, 800, 600, 32, 8, 16, SEG_GRAPH } },
63 { 0x144, { MM_DIRECT, 1024, 768, 32, 8, 16, SEG_GRAPH } },
64 { 0x145, { MM_DIRECT, 1280, 1024, 32, 8, 16, SEG_GRAPH } },
65 { 0x146, { MM_PACKED, 320, 200, 8, 8, 16, SEG_GRAPH } },
66 { 0x147, { MM_DIRECT, 1600, 1200, 32, 8, 16, SEG_GRAPH } },
67 { 0x148, { MM_PACKED, 1152, 864, 8, 8, 16, SEG_GRAPH } },
68 { 0x149, { MM_DIRECT, 1152, 864, 15, 8, 16, SEG_GRAPH } },
69 { 0x14a, { MM_DIRECT, 1152, 864, 16, 8, 16, SEG_GRAPH } },
70 { 0x14b, { MM_DIRECT, 1152, 864, 24, 8, 16, SEG_GRAPH } },
71 { 0x14c, { MM_DIRECT, 1152, 864, 32, 8, 16, SEG_GRAPH } },
Kevin O'Connora9dcc882013-11-30 11:04:09 -050072 { 0x175, { MM_DIRECT, 1280, 768, 16, 8, 16, SEG_GRAPH } },
73 { 0x176, { MM_DIRECT, 1280, 768, 24, 8, 16, SEG_GRAPH } },
74 { 0x177, { MM_DIRECT, 1280, 768, 32, 8, 16, SEG_GRAPH } },
Kevin O'Connor03776022012-01-21 11:00:11 -050075 { 0x178, { MM_DIRECT, 1280, 800, 16, 8, 16, SEG_GRAPH } },
76 { 0x179, { MM_DIRECT, 1280, 800, 24, 8, 16, SEG_GRAPH } },
77 { 0x17a, { MM_DIRECT, 1280, 800, 32, 8, 16, SEG_GRAPH } },
78 { 0x17b, { MM_DIRECT, 1280, 960, 16, 8, 16, SEG_GRAPH } },
79 { 0x17c, { MM_DIRECT, 1280, 960, 24, 8, 16, SEG_GRAPH } },
80 { 0x17d, { MM_DIRECT, 1280, 960, 32, 8, 16, SEG_GRAPH } },
81 { 0x17e, { MM_DIRECT, 1440, 900, 16, 8, 16, SEG_GRAPH } },
82 { 0x17f, { MM_DIRECT, 1440, 900, 24, 8, 16, SEG_GRAPH } },
83 { 0x180, { MM_DIRECT, 1440, 900, 32, 8, 16, SEG_GRAPH } },
84 { 0x181, { MM_DIRECT, 1400, 1050, 16, 8, 16, SEG_GRAPH } },
85 { 0x182, { MM_DIRECT, 1400, 1050, 24, 8, 16, SEG_GRAPH } },
86 { 0x183, { MM_DIRECT, 1400, 1050, 32, 8, 16, SEG_GRAPH } },
87 { 0x184, { MM_DIRECT, 1680, 1050, 16, 8, 16, SEG_GRAPH } },
88 { 0x185, { MM_DIRECT, 1680, 1050, 24, 8, 16, SEG_GRAPH } },
89 { 0x186, { MM_DIRECT, 1680, 1050, 32, 8, 16, SEG_GRAPH } },
90 { 0x187, { MM_DIRECT, 1920, 1200, 16, 8, 16, SEG_GRAPH } },
91 { 0x188, { MM_DIRECT, 1920, 1200, 24, 8, 16, SEG_GRAPH } },
92 { 0x189, { MM_DIRECT, 1920, 1200, 32, 8, 16, SEG_GRAPH } },
93 { 0x18a, { MM_DIRECT, 2560, 1600, 16, 8, 16, SEG_GRAPH } },
94 { 0x18b, { MM_DIRECT, 2560, 1600, 24, 8, 16, SEG_GRAPH } },
95 { 0x18c, { MM_DIRECT, 2560, 1600, 32, 8, 16, SEG_GRAPH } },
Kevin O'Connora9dcc882013-11-30 11:04:09 -050096 { 0x18d, { MM_DIRECT, 1280, 720, 16, 8, 16, SEG_GRAPH } },
97 { 0x18e, { MM_DIRECT, 1280, 720, 24, 8, 16, SEG_GRAPH } },
98 { 0x18f, { MM_DIRECT, 1280, 720, 32, 8, 16, SEG_GRAPH } },
99 { 0x190, { MM_DIRECT, 1920, 1080, 16, 8, 16, SEG_GRAPH } },
100 { 0x191, { MM_DIRECT, 1920, 1080, 24, 8, 16, SEG_GRAPH } },
101 { 0x192, { MM_DIRECT, 1920, 1080, 32, 8, 16, SEG_GRAPH } },
Julian Pidancet87879e22011-12-19 05:08:00 +0000102};
103
Gerd Hoffmann53663502013-09-05 10:16:18 +0200104static int dispi_found VAR16 = 0;
105
Kevin O'Connore6bc4c12012-01-21 11:26:37 -0500106static int is_bochsvga_mode(struct vgamode_s *vmode_g)
107{
108 return (vmode_g >= &bochsvga_modes[0].info
109 && vmode_g <= &bochsvga_modes[ARRAY_SIZE(bochsvga_modes)-1].info);
110}
111
Kevin O'Connor3339c052012-01-13 20:00:35 -0500112struct vgamode_s *bochsvga_find_mode(int mode)
113{
114 struct bochsvga_mode *m = bochsvga_modes;
Gerd Hoffmann53663502013-09-05 10:16:18 +0200115 if (GET_GLOBAL(dispi_found))
116 for (; m < &bochsvga_modes[ARRAY_SIZE(bochsvga_modes)]; m++)
117 if (GET_GLOBAL(m->mode) == mode)
118 return &m->info;
Kevin O'Connor3339c052012-01-13 20:00:35 -0500119 return stdvga_find_mode(mode);
Julian Pidancet87879e22011-12-19 05:08:00 +0000120}
121
Kevin O'Connor34203cd2012-01-09 20:55:31 -0500122void
123bochsvga_list_modes(u16 seg, u16 *dest, u16 *last)
Julian Pidancet87879e22011-12-19 05:08:00 +0000124{
Kevin O'Connorc4a0b972012-01-09 20:21:31 -0500125 struct bochsvga_mode *m = bochsvga_modes;
Gerd Hoffmann53663502013-09-05 10:16:18 +0200126 if (GET_GLOBAL(dispi_found)) {
127 for (; m < &bochsvga_modes[ARRAY_SIZE(bochsvga_modes)] && dest<last; m++) {
128 u16 mode = GET_GLOBAL(m->mode);
129 if (mode == 0xffff)
130 continue;
131 SET_FARVAR(seg, *dest, mode);
132 dest++;
133 }
Julian Pidancet8bd766f2011-12-19 05:08:01 +0000134 }
Kevin O'Connor34203cd2012-01-09 20:55:31 -0500135 stdvga_list_modes(seg, dest, last);
Julian Pidancet87879e22011-12-19 05:08:00 +0000136}
137
Kevin O'Connor933bb762012-02-01 21:54:55 -0500138
139/****************************************************************
140 * Helper functions
141 ****************************************************************/
142
Kevin O'Connor4ade5232013-09-18 21:41:48 -0400143static inline u16 dispi_read(u16 reg)
144{
145 outw(reg, VBE_DISPI_IOPORT_INDEX);
146 return inw(VBE_DISPI_IOPORT_DATA);
147}
148static inline void dispi_write(u16 reg, u16 val)
149{
150 outw(reg, VBE_DISPI_IOPORT_INDEX);
151 outw(val, VBE_DISPI_IOPORT_DATA);
152}
153
Kevin O'Connor9961f992012-01-21 11:53:44 -0500154int
155bochsvga_get_window(struct vgamode_s *vmode_g, int window)
156{
Gerd Hoffmann53663502013-09-05 10:16:18 +0200157 if (!GET_GLOBAL(dispi_found))
158 return stdvga_get_window(vmode_g, window);
Kevin O'Connor9961f992012-01-21 11:53:44 -0500159 if (window != 0)
160 return -1;
161 return dispi_read(VBE_DISPI_INDEX_BANK);
162}
163
164int
165bochsvga_set_window(struct vgamode_s *vmode_g, int window, int val)
166{
Gerd Hoffmann53663502013-09-05 10:16:18 +0200167 if (!GET_GLOBAL(dispi_found))
168 return stdvga_set_window(vmode_g, window, val);
Kevin O'Connor9961f992012-01-21 11:53:44 -0500169 if (window != 0)
170 return -1;
171 dispi_write(VBE_DISPI_INDEX_BANK, val);
172 if (dispi_read(VBE_DISPI_INDEX_BANK) != val)
173 return -1;
174 return 0;
175}
176
Kevin O'Connor3876b532012-01-24 00:07:44 -0500177int
178bochsvga_get_linelength(struct vgamode_s *vmode_g)
179{
Gerd Hoffmann53663502013-09-05 10:16:18 +0200180 if (!GET_GLOBAL(dispi_found))
181 return stdvga_get_linelength(vmode_g);
Kevin O'Connor3876b532012-01-24 00:07:44 -0500182 return dispi_read(VBE_DISPI_INDEX_VIRT_WIDTH) * vga_bpp(vmode_g) / 8;
183}
184
185int
186bochsvga_set_linelength(struct vgamode_s *vmode_g, int val)
187{
188 stdvga_set_linelength(vmode_g, val);
Gerd Hoffmann53663502013-09-05 10:16:18 +0200189 if (GET_GLOBAL(dispi_found)) {
190 int pixels = (val * 8) / vga_bpp(vmode_g);
191 dispi_write(VBE_DISPI_INDEX_VIRT_WIDTH, pixels);
192 }
Kevin O'Connor3876b532012-01-24 00:07:44 -0500193 return 0;
194}
195
Kevin O'Connord61fc532012-01-27 20:37:45 -0500196int
197bochsvga_get_displaystart(struct vgamode_s *vmode_g)
198{
Gerd Hoffmann53663502013-09-05 10:16:18 +0200199 if (!GET_GLOBAL(dispi_found))
200 return stdvga_get_displaystart(vmode_g);
Kevin O'Connord61fc532012-01-27 20:37:45 -0500201 int bpp = vga_bpp(vmode_g);
202 int linelength = dispi_read(VBE_DISPI_INDEX_VIRT_WIDTH) * bpp / 8;
203 int x = dispi_read(VBE_DISPI_INDEX_X_OFFSET);
204 int y = dispi_read(VBE_DISPI_INDEX_Y_OFFSET);
205 return x * bpp / 8 + linelength * y;
206}
207
208int
209bochsvga_set_displaystart(struct vgamode_s *vmode_g, int val)
210{
211 stdvga_set_displaystart(vmode_g, val);
Gerd Hoffmann53663502013-09-05 10:16:18 +0200212 if (GET_GLOBAL(dispi_found)) {
213 int bpp = vga_bpp(vmode_g);
214 int linelength = dispi_read(VBE_DISPI_INDEX_VIRT_WIDTH) * bpp / 8;
215 dispi_write(VBE_DISPI_INDEX_X_OFFSET, (val % linelength) * 8 / bpp);
216 dispi_write(VBE_DISPI_INDEX_Y_OFFSET, val / linelength);
217 }
Kevin O'Connord61fc532012-01-27 20:37:45 -0500218 return 0;
219}
220
Kevin O'Connore737b172012-02-04 11:08:39 -0500221int
222bochsvga_get_dacformat(struct vgamode_s *vmode_g)
223{
Gerd Hoffmann53663502013-09-05 10:16:18 +0200224 if (!GET_GLOBAL(dispi_found))
225 return stdvga_get_dacformat(vmode_g);
Kevin O'Connore737b172012-02-04 11:08:39 -0500226 u16 en = dispi_read(VBE_DISPI_INDEX_ENABLE);
227 return (en & VBE_DISPI_8BIT_DAC) ? 8 : 6;
228}
229
230int
231bochsvga_set_dacformat(struct vgamode_s *vmode_g, int val)
232{
Gerd Hoffmann53663502013-09-05 10:16:18 +0200233 if (!GET_GLOBAL(dispi_found))
234 return stdvga_set_dacformat(vmode_g, val);
Kevin O'Connore737b172012-02-04 11:08:39 -0500235 u16 en = dispi_read(VBE_DISPI_INDEX_ENABLE);
236 if (val == 6)
237 en &= ~VBE_DISPI_8BIT_DAC;
238 else if (val == 8)
239 en |= VBE_DISPI_8BIT_DAC;
240 else
241 return -1;
242 dispi_write(VBE_DISPI_INDEX_ENABLE, en);
243 return 0;
244}
245
Kevin O'Connor2469f892012-02-04 12:40:02 -0500246int
247bochsvga_size_state(int states)
248{
249 int size = stdvga_size_state(states);
250 if (size < 0)
251 return size;
Gerd Hoffmann53663502013-09-05 10:16:18 +0200252 if (GET_GLOBAL(dispi_found) && (states & 8))
Kevin O'Connor2469f892012-02-04 12:40:02 -0500253 size += (VBE_DISPI_INDEX_Y_OFFSET-VBE_DISPI_INDEX_XRES+1)*sizeof(u16);
254 return size;
255}
256
257int
258bochsvga_save_state(u16 seg, void *data, int states)
259{
260 int ret = stdvga_save_state(seg, data, states);
261 if (ret < 0)
262 return ret;
263
Gerd Hoffmann53663502013-09-05 10:16:18 +0200264 if (!GET_GLOBAL(dispi_found))
265 return 0;
Kevin O'Connor2469f892012-02-04 12:40:02 -0500266 if (!(states & 8))
267 return 0;
268
269 u16 *info = (data + stdvga_size_state(states));
270 u16 en = dispi_read(VBE_DISPI_INDEX_ENABLE);
271 SET_FARVAR(seg, *info, en);
272 info++;
273 if (!(en & VBE_DISPI_ENABLED))
274 return 0;
275 int i;
276 for (i = VBE_DISPI_INDEX_XRES; i <= VBE_DISPI_INDEX_Y_OFFSET; i++)
277 if (i != VBE_DISPI_INDEX_ENABLE) {
278 u16 v = dispi_read(i);
279 SET_FARVAR(seg, *info, v);
280 info++;
281 }
282 return 0;
283}
284
285int
286bochsvga_restore_state(u16 seg, void *data, int states)
287{
288 int ret = stdvga_restore_state(seg, data, states);
289 if (ret < 0)
290 return ret;
291
Gerd Hoffmann53663502013-09-05 10:16:18 +0200292 if (!GET_GLOBAL(dispi_found))
293 return 0;
Kevin O'Connor2469f892012-02-04 12:40:02 -0500294 if (!(states & 8))
295 return 0;
296
297 u16 *info = (data + stdvga_size_state(states));
298 u16 en = GET_FARVAR(seg, *info);
299 info++;
300 if (!(en & VBE_DISPI_ENABLED)) {
301 dispi_write(VBE_DISPI_INDEX_ENABLE, en);
302 return 0;
303 }
304 int i;
305 for (i = VBE_DISPI_INDEX_XRES; i <= VBE_DISPI_INDEX_Y_OFFSET; i++)
306 if (i == VBE_DISPI_INDEX_ENABLE) {
307 dispi_write(i, en);
308 } else {
309 dispi_write(i, GET_FARVAR(seg, *info));
310 info++;
311 }
312 return 0;
313}
314
Kevin O'Connor933bb762012-02-01 21:54:55 -0500315
316/****************************************************************
317 * Mode setting
318 ****************************************************************/
319
Kevin O'Connor5108c692011-12-31 19:13:45 -0500320int
Kevin O'Connore6bc4c12012-01-21 11:26:37 -0500321bochsvga_set_mode(struct vgamode_s *vmode_g, int flags)
Julian Pidancet87879e22011-12-19 05:08:00 +0000322{
Gerd Hoffmann53663502013-09-05 10:16:18 +0200323 if (GET_GLOBAL(dispi_found))
324 dispi_write(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_DISABLED);
Kevin O'Connorc8845022012-01-31 22:51:56 -0500325 if (! is_bochsvga_mode(vmode_g))
Kevin O'Connore6bc4c12012-01-21 11:26:37 -0500326 return stdvga_set_mode(vmode_g, flags);
Gerd Hoffmann53663502013-09-05 10:16:18 +0200327 if (!GET_GLOBAL(dispi_found))
328 return -1;
Kevin O'Connor5108c692011-12-31 19:13:45 -0500329
Kevin O'Connor5b6936e2013-11-29 18:43:35 -0500330 u8 memmodel = GET_GLOBAL(vmode_g->memmodel);
331 if (memmodel == MM_PLANAR)
Kevin O'Connore6bc4c12012-01-21 11:26:37 -0500332 stdvga_set_mode(stdvga_find_mode(0x6a), 0);
Kevin O'Connor5b6936e2013-11-29 18:43:35 -0500333 if (memmodel == MM_PACKED && !(flags & MF_NOPALETTE))
334 stdvga_set_packed_palette();
Julian Pidancet87879e22011-12-19 05:08:00 +0000335
Kevin O'Connor5b6936e2013-11-29 18:43:35 -0500336 dispi_write(VBE_DISPI_INDEX_BPP, GET_GLOBAL(vmode_g->depth));
Kevin O'Connor3339c052012-01-13 20:00:35 -0500337 u16 width = GET_GLOBAL(vmode_g->width);
338 u16 height = GET_GLOBAL(vmode_g->height);
339 dispi_write(VBE_DISPI_INDEX_XRES, width);
340 dispi_write(VBE_DISPI_INDEX_YRES, height);
Julian Pidancet8bd766f2011-12-19 05:08:01 +0000341 dispi_write(VBE_DISPI_INDEX_BANK, 0);
Kevin O'Connorc8845022012-01-31 22:51:56 -0500342 u16 bf = ((flags & MF_NOCLEARMEM ? VBE_DISPI_NOCLEARMEM : 0)
343 | (flags & MF_LINEARFB ? VBE_DISPI_LFB_ENABLED : 0));
344 dispi_write(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_ENABLED | bf);
Julian Pidancet8bd766f2011-12-19 05:08:01 +0000345
346 /* VGA compat setup */
Kevin O'Connor184705f2012-01-14 22:17:43 -0500347 u16 crtc_addr = VGAREG_VGA_CRTC_ADDRESS;
348 stdvga_crtc_write(crtc_addr, 0x11, 0x00);
349 stdvga_crtc_write(crtc_addr, 0x01, width / 8 - 1);
Kevin O'Connorc8845022012-01-31 22:51:56 -0500350 stdvga_set_linelength(vmode_g, width);
Kevin O'Connor184705f2012-01-14 22:17:43 -0500351 stdvga_crtc_write(crtc_addr, 0x12, height - 1);
352 u8 v = 0;
353 if ((height - 1) & 0x0100)
354 v |= 0x02;
355 if ((height - 1) & 0x0200)
Julian Pidancet8bd766f2011-12-19 05:08:01 +0000356 v |= 0x40;
Kevin O'Connor184705f2012-01-14 22:17:43 -0500357 stdvga_crtc_mask(crtc_addr, 0x07, 0x42, v);
Julian Pidancet8bd766f2011-12-19 05:08:01 +0000358
Kevin O'Connor184705f2012-01-14 22:17:43 -0500359 stdvga_crtc_write(crtc_addr, 0x09, 0x00);
360 stdvga_crtc_mask(crtc_addr, 0x17, 0x00, 0x03);
361 stdvga_attr_mask(0x10, 0x00, 0x01);
362 stdvga_grdc_write(0x06, 0x05);
363 stdvga_sequ_write(0x02, 0x0f);
Kevin O'Connor5b6936e2013-11-29 18:43:35 -0500364 if (memmodel != MM_PLANAR) {
Kevin O'Connor184705f2012-01-14 22:17:43 -0500365 stdvga_crtc_mask(crtc_addr, 0x14, 0x00, 0x40);
366 stdvga_attr_mask(0x10, 0x00, 0x40);
367 stdvga_sequ_mask(0x04, 0x00, 0x08);
368 stdvga_grdc_mask(0x05, 0x20, 0x40);
Julian Pidancet8bd766f2011-12-19 05:08:01 +0000369 }
David Woodhouse0069a312013-02-08 15:50:54 +0000370 stdvga_attrindex_write(0x20);
Julian Pidancet8bd766f2011-12-19 05:08:01 +0000371
Kevin O'Connor5108c692011-12-31 19:13:45 -0500372 return 0;
Julian Pidancet87879e22011-12-19 05:08:00 +0000373}
Kevin O'Connor933bb762012-02-01 21:54:55 -0500374
375
376/****************************************************************
377 * Init
378 ****************************************************************/
379
380int
Kevin O'Connord83c87b2013-01-21 01:14:12 -0500381bochsvga_setup(void)
Kevin O'Connor933bb762012-02-01 21:54:55 -0500382{
Kevin O'Connord83c87b2013-01-21 01:14:12 -0500383 int ret = stdvga_setup();
Kevin O'Connor933bb762012-02-01 21:54:55 -0500384 if (ret)
385 return ret;
386
387 /* Sanity checks */
388 dispi_write(VBE_DISPI_INDEX_ID, VBE_DISPI_ID0);
389 if (dispi_read(VBE_DISPI_INDEX_ID) != VBE_DISPI_ID0) {
Gerd Hoffmann53663502013-09-05 10:16:18 +0200390 dprintf(1, "No VBE DISPI interface detected, falling back to stdvga\n");
391 return 0;
Kevin O'Connor933bb762012-02-01 21:54:55 -0500392 }
393
394 dispi_write(VBE_DISPI_INDEX_ID, VBE_DISPI_ID5);
Gerd Hoffmann53663502013-09-05 10:16:18 +0200395 SET_VGA(dispi_found, 1);
Kevin O'Connor933bb762012-02-01 21:54:55 -0500396
Kevin O'Connorcfd7ef92012-02-02 22:52:17 -0500397 if (GET_GLOBAL(HaveRunInit))
398 return 0;
399
Kevin O'Connor933bb762012-02-01 21:54:55 -0500400 u32 lfb_addr = VBE_DISPI_LFB_PHYSICAL_ADDRESS;
401 int bdf = GET_GLOBAL(VgaBDF);
402 if (CONFIG_VGA_PCI && bdf >= 0) {
403 int barid = 0;
404 u32 bar = pci_config_readl(bdf, PCI_BASE_ADDRESS_0);
405 if ((bar & PCI_BASE_ADDRESS_SPACE) != PCI_BASE_ADDRESS_SPACE_MEMORY) {
406 barid = 1;
407 bar = pci_config_readl(bdf, PCI_BASE_ADDRESS_1);
408 }
409 lfb_addr = bar & PCI_BASE_ADDRESS_MEM_MASK;
410 dprintf(1, "VBE DISPI: bdf %02x:%02x.%x, bar %d\n", pci_bdf_to_bus(bdf)
411 , pci_bdf_to_dev(bdf), pci_bdf_to_fn(bdf), barid);
412 }
413
414 SET_VGA(VBE_framebuffer, lfb_addr);
415 u32 totalmem = dispi_read(VBE_DISPI_INDEX_VIDEO_MEMORY_64K) * 64 * 1024;
416 SET_VGA(VBE_total_memory, totalmem);
Kevin O'Connor49ddd9e2012-09-04 13:16:36 -0400417 SET_VGA(VBE_win_granularity, 64);
Kevin O'Connor933bb762012-02-01 21:54:55 -0500418 SET_VGA(VBE_capabilities, VBE_CAPABILITY_8BIT_DAC);
419
420 dprintf(1, "VBE DISPI: lfb_addr=%x, size %d MB\n",
Gerd Hoffmann091dd172012-02-06 15:51:43 +0100421 lfb_addr, totalmem >> 20);
Kevin O'Connor933bb762012-02-01 21:54:55 -0500422
423 // Validate modes
424 u16 en = dispi_read(VBE_DISPI_INDEX_ENABLE);
425 dispi_write(VBE_DISPI_INDEX_ENABLE, en | VBE_DISPI_GETCAPS);
426 u16 max_xres = dispi_read(VBE_DISPI_INDEX_XRES);
427 u16 max_bpp = dispi_read(VBE_DISPI_INDEX_BPP);
428 dispi_write(VBE_DISPI_INDEX_ENABLE, en);
429 struct bochsvga_mode *m = bochsvga_modes;
430 for (; m < &bochsvga_modes[ARRAY_SIZE(bochsvga_modes)]; m++) {
431 u16 width = GET_GLOBAL(m->info.width);
432 u16 height = GET_GLOBAL(m->info.height);
433 u8 depth = GET_GLOBAL(m->info.depth);
434 u32 mem = (height * DIV_ROUND_UP(width * vga_bpp(&m->info), 8)
Kevin O'Connor68f56aa2013-09-10 10:41:33 -0400435 * stdvga_vram_ratio(&m->info));
Kevin O'Connor933bb762012-02-01 21:54:55 -0500436
437 if (width > max_xres || depth > max_bpp || mem > totalmem) {
438 dprintf(1, "Removing mode %x\n", GET_GLOBAL(m->mode));
439 SET_VGA(m->mode, 0xffff);
440 }
441 }
442
443 return 0;
444}